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Vishay Siliconix DG308BDY-T1
- Part No.:
- DG308BDY-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG308BDY-T1.pdf
- Description:
- IC SWITCH SPST-NOX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,543
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Product details
Overview
DG308BDY-T1 from Vishay Siliconix is a quad single-pole single-throw (SPST) normally open analog switch fabricated in silicon-gate CMOS technology, rated for ±22 V dual-supply operation, with 45 Ω typical on-resistance, <200 ns turn-on time, and 1 pC charge injection - used in precision sample-and-hold circuits, programmable gain amplifiers, and industrial test equipment signal routing.
For engineers reviewing the DG308BDY-T1 datasheet, DG308BDY-T1 pinout, DG308BDY-T1 application, or DG308BDY-T1 equivalent, this page delivers verified electrical specs, package mapping to 16-pin narrow SOIC, functional truth table alignment, leakage and switching performance under ±15 V and single-supply conditions, and real-world design context for high-accuracy analog multiplexing.
Technical Context
The DG308BDY-T1 implements four independent bidirectional SPST switches with CMOS-compatible digital control inputs requiring ≥11 V for logic high and ≤3.5 V for logic low. Each channel features true bi-directional conduction when on and blocks signals up to supply rails when off, supported by epitaxial layer latchup protection.
Its improved charge injection compensation minimizes transients during switching, enabling stable operation in precision amplifier feedback paths and sample-and-hold topologies. The device supports both dual-supply (±4 V to ±22 V) and single-supply (4 V to 44 V) configurations, with guaranteed analog signal range of ±15 V under ±15 V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±4 V to ±22 V dual supply; enables full ±15 V analog signal handling without clipping |
| On-Resistance | 45 Ω typ. at ±15 V; ensures minimal gain error and voltage drop in precision signal paths |
| Charge Injection | 1 pC typ.; reduces sampling aperture error in high-resolution data acquisition systems |
| Off-Leakage Current | ±20 pA max. at ±14 V; preserves accuracy in high-impedance sensor interfaces and integrator circuits |
| Switching Speed | tON < 200 ns, tOFF < 150 ns; supports fast multiplexing in automated test equipment |
| Off-Isolation | 90 dB at 100 kHz; maintains channel separation in multi-channel instrumentation front-ends |
| Logic Thresholds | VINH ≥ 11 V, VINL ≤ 3.5 V; ensures robust TTL/CMOS interface compatibility with noise margin |
Pinout & Package
Package: 16-pin narrow SOIC (JEDEC MS-012), 3.90 mm × 9.90 mm body, 1.27 mm pitch, RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Digital Input (IN1–IN4) | Active-high control lines; logic high enables corresponding switch |
| 5, 6, 7, 8 | Source (S1–S4) | Input-side terminals; bidirectional analog path when switch is ON |
| 9, 10, 11, 12 | Drain (D1–D4) | Output-side terminals; connected to Sx when INx = high |
| 13 | V+ | Positive supply rail; must be ≥ |V−| + 4 V for continuous operation |
| 14 | GND | Ground reference for logic inputs and internal level shifters |
| 15 | V− | Negative supply rail; defines lower bound of analog signal range |
| 16 | NC | No connect; internally unconnected; must be left floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Improved RDS(on) matching | ΔRDS(on) ≤ 2 %; enables matched gain scaling in programmable amplifier networks |
| Low glitch energy | Q = 1 pC; limits transient-induced offset in precision sample-and-hold hold capacitors |
| Latchup immunity | Epitaxial substrate prevents destructive latchup under overvoltage or ESD stress |
| Extended temperature range | Rated for −40 °C to +85 °C; validated for industrial instrumentation and test equipment environments |
| Bidirectional signal flow | True analog symmetry allows use as either input or output terminal without polarity constraints |
Applications
| Programmable Gain Amplifier | Automated Test Equipment |
|---|---|
Use Scenario: Digitally selecting resistor values in op-amp feedback networks to achieve discrete gain steps (e.g., ×1, ×10, ×100). IC Role / Device Role / Timing Role: DG308BDY-T1 acts as low-leakage, low-RON analog switch controlling feedback path connectivity. Use Value: 45 Ω RDS(on) and ±20 pA leakage preserve gain accuracy and DC stability across all gain settings. | Use Scenario: Routing stimulus and response signals between DUT, source, and measurement instruments in benchtop ATE platforms. IC Role / Device Role / Timing Role: DG308BDY-T1 serves as reconfigurable signal path selector with sub-200 ns switching for high-throughput test sequencing. Use Value: 90 dB off-isolation and 1 pC charge injection minimize crosstalk and sampling error during rapid channel scanning. |
| Industrial Data Acquisition | Portable Precision Instrumentation |
Use Scenario: Multiplexing multiple sensor outputs (e.g., thermocouples, strain gauges) into a shared ADC front-end. IC Role / Device Role / Timing Role: DG308BDY-T1 functions as low-offset, high-Z analog multiplexer with rail-to-rail signal support. Use Value: ±22 V rating and ±15 V analog range accommodate wide-output sensors without external level-shifting. | Use Scenario: Enabling battery-powered handheld meters with selectable input ranges and auto-zero calibration paths. IC Role / Device Role / Timing Role: DG308BDY-T1 provides low-power, low-glitch switching for calibration and range selection circuitry. Use Value: 1 µA supply current and 1 pC charge injection extend battery life while maintaining measurement repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESE+ | Single-supply only (1.8 V to 36 V); 60 Ω RDS(on); no ±22 V rating | Suitable for low-voltage portable designs but not bipolar signal routing | Select when operating exclusively from single-ended supplies and analog range ≤ 30 V |
| ADG1408BRUZ | 8-channel SPST; 4.7 Ω RDS(on); higher cost; requires separate logic supply | Higher channel count and lower on-resistance, but larger footprint and tighter layout constraints | Choose for high-density, low-RON applications where board space permits TSSOP-24 |
Compared with MAX4617ESE+ and ADG1408BRUZ, the DG308BDY-T1 uniquely balances ±22 V capability, 45 Ω on-resistance, and compact 16-pin SOIC packaging - making it optimal for industrial-grade bipolar signal switching where supply flexibility and layout simplicity are critical.
Availability
DG308BDY-T1 is available at Aetrix Electronics and suitable for industrial instrumentation, automated test equipment, and precision data acquisition systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for DG308BDY-T1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay Siliconix is a global semiconductor manufacturer specializing in discrete power MOSFETs, analog switches, diodes, and optoelectronics, with emphasis on high-reliability, high-performance components for industrial and automotive markets.
The DG308B series belongs to Vishay's precision analog switch product line, designed specifically for high-fidelity signal routing in test and measurement, instrumentation, and process control systems where low leakage, low distortion, and rail-to-rail analog handling are essential.
FAQ
What is the maximum analog signal voltage the DG308BDY-T1 can handle?
The DG308BDY-T1 supports analog signals up to ±22 V relative to its supply rails, with guaranteed operation across ±15 V under standard test conditions. Its absolute maximum rating allows V+ to V− differential up to 44 V, and signals exceeding V+ or V− are clamped by internal diodes - limiting forward current to 30 mA per terminal. This makes DG308BDY-T1 suitable for high-dynamic-range industrial sensor interfaces and bipolar test signal routing.
Does the DG308BDY-T1 require dual supplies to operate?
No, the DG308BDY-T1 supports both dual-supply (±4 V to ±22 V) and single-supply (4 V to 44 V) operation. In single-supply mode, the analog signal range is 0 V to V+, with typical RDS(on) increasing to 90 Ω at V+ = 12 V. Logic thresholds remain fixed (VINH ≥ 11 V, VINL ≤ 3.5 V), so level-shifting may be needed for 3.3 V or 5 V controllers - a key consideration when designing around DG308BDY-T1 in mixed-voltage systems.
How does the DG308BDY-T1 differ from the older DG308A?
The DG308BDY-T1 is an enhanced version of the DG308A, featuring lower on-resistance (45 Ω vs. ~65 Ω), reduced leakage (±20 pA vs. ±100 pA), faster switching (<200 ns vs. ~350 ns), and lower charge injection (1 pC vs. ~5 pC). These improvements stem from Vishay Siliconix' proprietary silicon-gate CMOS process and optimized charge compensation design - directly enhancing accuracy and speed in DG308BDY-T1-based sample-and-hold and programmable gain circuits.
Can the DG308BDY-T1 be used in a normally closed configuration?
No - the DG308BDY-T1 is a normally open (NO) switch; its channels conduct only when the corresponding digital input is high. For normally closed (NC) functionality, the DG309BDY-T1 is the pin-compatible counterpart in the same family. Both share identical package, pinout, and electrical ratings, differing only in default state - allowing designers to mix DG308BDY-T1 and DG309BDY-T1 on the same PCB for complementary switching logic in applications like active filters or redundant signal paths.
What is the thermal derating behavior of the DG308BDY-T1 in SOIC package?
In its 16-pin narrow SOIC package, the DG308BDY-T1 has a power dissipation limit of 640 mW at 25 °C, derating linearly at 7.6 mW/°C above 75 °C. At 105 °C ambient, usable power drops to approximately 410 mW. This derating applies regardless of supply configuration and must be accounted for in high-channel-count or high-current analog routing designs - especially when multiple DG308BDY-T1 devices operate simultaneously on thermally constrained PCBs.
DG308BDY-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.7Ohm
- Voltage - Supply, Single (V+):
- 4V ~ 44V
- Voltage - Supply, Dual (V±):
- ±4V ~ 22V
- Switch Time (Ton, Toff) (Max):
- 200ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 5pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -95dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG308BDY-T1 FAQ
1.How can I place an order for DG308BDY-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG308BDY-T1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DG308BDY-T1 reliable?
The price and inventory of DG308BDY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG308BDY-T1 is usually 5 days.
3.What payment methods are accepted for DG308BDY-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG308BDY-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG308BDY-T1?
DG308BDY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG308BDY-T1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DG308BDY-T1?
For technical support, including DG308BDY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG308BDY-T1 requirements.
6.How does Aetrix verify that DG308BDY-T1 is sourced from the original manufacturer or authorized distributors?
All DG308BDY-T1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DG308BDY-T1 meets industry standards.
7.What is the process for return or replacement of DG308BDY-T1?
All DG308BDY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG308BDY-T1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DG308BDY-T1 part is unused and in its original packaging.
Return procedure for DG308BDY-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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